Michael Graham O’Brien

Mr. O’Brien has served as our Chief Financial Officer since July 2025. He previously served as our Interim Chief Financial Officer from September 2024 to July 2025. He has also held roles with increasing levels of responsibility at ZoomInfo since December 2017, previously serving as Vice President of Financial Planning & Analysis from January 2023 to September 2024. Prior to joining the Company, Mr. O’Brien held accounting positions at Rainking Solutions from 2016 to 2017, and with Kaseya from 2008 to 2016. Mr. O’Brien holds a B.S. in Accounting from Lehigh University and is a CPA registered with the District of Columbia Board of Accountancy.